<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第一个JavaScript</title>
    <script type="text/javascript">
        document.write("<h1>欢迎来到我的世界</h1>")
    </script>
    <script type="text/javascript" src="main.js"></script>
</head>
<body>

</body>
</html>